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CVE-2026-43629

llama.cpp b4882–b9058 Buffer Overflow in KV Cache State Restore PUBLISHED

Description (CNA)

llama.cpp builds b4882 through b9058 contain a heap buffer overflow vulnerability in the KV cache state restore path where the state_read_data() function computes write size without overflow checking, allowing attackers with write access to the slot_save_path directory to corrupt heap memory. Attackers can craft malicious state files where cell_count multiplication overflows or exceeds tensor buffer allocation to write attacker-controlled bytes past buffer boundaries, potentially resulting in heap metadata corruption, model weight corruption, or arbitrary code execution via function pointer overwrite.

Affected (CNA)

Vendor / productVersions
ggml-org / llama.cppaffected b4882 through b9058; affected 0.16.1 through 0.17.1

CWE

CWE-787, CWE-190

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.